BRITAX One4Life ClickTight All-in-One Convertible Car Seat

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Britax One4Life convertible to booster car seat grows with your child for 10 years—from 5-120 lbs and up to 63” tall. As the only all-in-one with ClickTight, it’s easy to install in seconds, so you’ll know it’s right. Every time. Travel with peace of mind, knowing your child is surrounded...
Color :
Drift - SafeWash
Cadet - SafeWash
Plum - SafeWash
Cool Flow Teal

Britax One4Life convertible to booster car seat grows with your child for 10 years—from 5-120 lbs and up to 63” tall. As the only all-in-one with ClickTight, it’s easy to install in seconds, so you’ll know it’s right. Every time. Travel with peace of mind, knowing your child is surrounded in Trusted Britax Safety and Full Body Protection.

BRITAX One4Life ClickTight All-in-One Convertible Car Seat Features:

  • Converts from a rear-facing infant seat (5- 50lb) to a forward-facing 5-point harness seat (22-65 lbs) to a high-back belt-positioning booster seat (40- 120lb).

  • 10 years of use: grows with your child from 5 – 120 lbs.

  • ClickTight Installation. Install with confidence, every time. You’ll know it’s right in just 3 easy steps: Pinch to open. Thread and buckle. Click it closed.

  • 15-Position, Quick-Adjust Headrest and Harness create the proper fit as your child grows.

  • Patented V-Shaped Tether with staged-release stitches helps slow and reduce forward movement during a crash.

  • High Strength Steel Frame reinforces the seat structure to help keep it sturdy and stabilized.

  • Quick-Push, 9-Position Recline helps you find the most comfortable fit for your child and the best fit for your vehicle.

  • SafeCell Technology acts as a crumple zone, absorbing crash energy to help keep it away from your child.

  • Easy-Read Level Indicators help you find the correct recline angle when installing the car seat.

  • 2 Layers of Side Impact Protection: Energy-absorbing shell and foam-lined surround your child’s head, neck and torso.

  • Stay-Put, Soft Comfort Pads help prevent the harness from rubbing against your child’s delicate neck.

  • Flip-Forward Buckle Pad stays out of the way for easy boarding; made with extra padding for premium comfort.

  • Built-In Cooling Channels and Ventilated Mesh improve air flow to keep your child comfortable.

  • Color-Coded Belt Guides make it easy to route the seat belt through the correct paths for rear-facing, forward-facing, and booster mode.

  • Removable Cover for easy cleaning without taking off the harness.

  • Harness Compartment neatly stores straps and buckles within the seat while in booster mode.

  • Dishwasher-Safe Cupholders easily twist out for cleaning between rides.

  • Removable Infant Insert helps keep your tiny baby safe and comfortable under 20 lbs.

  • Removable Head Pillow provides additional comfort for your growing baby.

  • Easy-Pull Harness Adjuster lets you tighten the harness using just one hand.

  • Harness Holder Slots keep the harness straps out of the way while your child gets in and out of the seat.

  • Tether Storage keeps the tether straps organized and out of the way when not in use.

  • Built-In Arm Rests keep your child happy and comfortable while they ride.

  • 5-Point Safety Harness with diamond weave webbing.

  • Tag-Free Headrest supports your child’s head and neck without irritation.

BRITAX One4Life ClickTight All-in-One Convertible Car Seat | ANB Baby
BRITAX One4Life ClickTight All-in-One Convertible Car Seat - For 05 to 120 Ibe Kids | ANB Baby
BRITAX One4Life ClickTight All-in-One Convertible Car Seat For Big Kid | ANB Baby
BRITAX One4Life ClickTight All-in-One Convertible Car Seat - For Big Kids | ANB Baby

Infant 05 to 20 Ibs:

BRITAX One4Life ClickTight All-in-One Convertible Car Seat Infant 05 to 20 Ibs | ANB Baby

Toddler 20 to 50 Ibs:  

BRITAX One4Life ClickTight All-in-One Convertible Car Seat For Toddler 20 to 50 Ibs | ANB Baby


 See Entire Britax Collection


Child Fit Information
Rear-facing Harnessed Weight 5 - 50 lbs
Rear-facing Harnessed Height Less than 49"
Forward-facing Harnessed Weight 22 - 65 lbs
Forward-facing Harnessed Height Less than 49"
Belt Positioning Booster Weight 40 - 120 lbs
Belt Positioning Booster Height 44 - 63"

Exterior Product Dimensions

Product Weight 30 lbs
Product Dimensions (L x W x H) 20.5" (L) x 19.5" (W) x 25" (H)
Headrest Fully Extended Height 33.5"
Fully Reclined Depth 30"
Fully Reclined and Headrest Fully Extended Depth 35.5"


Interior Product Dimensions

Seating Area Depth 13.25"
Seating Area Width 11"
Shoulder Width 14"
Harness Slot Heights 15 positions, 9" - 19"
Buckle Strap Positions 5.5" / 6.75" / 8.75"


Britax strongly recommends that children should be secured with a harness system until they exceed the weight or height limits specified.

Product Support:

One4Life All In One ClickTight Convertible Car Seat- Comparison Chart Click Here

One4Life Car Seat Installation: Rear-Facing Harness Mode using LATCH:

One4Life Car Seat Installation Rear-Facing Harness Mode using ClickTight:

One4Life Car Seat Installation: Forward-Facing Harness Mode using ClickTight:

One4Life Car Seat Installation: Belt-Positioning Booster Mode using LATCH:

Shipping Policy

Thank you for visiting and shopping at Following are the terms and conditions that constitute our Shipping Policy.

Domestic Shipping Policy Shipment processing time

All orders are processed within 24-48 hours. Orders are not shipped or delivered on weekends or holidays they will be shipped the next business day.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.

Shipping rates and delivery estimates

Shipping charges for your order will be calculated and displayed at checkout. * Overnight delivery is only available for orders with delivery addresses within the continental United States.

Delivery delays can occasionally occur.

We currently support, UPS, USPS and FedEx within United States

Shipment to P.O. boxes or APO/FPO addresses ships to addresses within the U.S., U.S. Territories, and APO/FPO/DPO addresses.

Currently we do ship to P.O. boxes and APO/FPO addresses, please allow a phone call confirmation before we fulfill the order. Shipment confirmation &

Order tracking

You will receive an order confirmation followed by Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties and Taxes is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.).

Damages is not liable for any products damaged or lost during shipping. If you received your order damaged, please contact the shipping carrier to file a claim.

Please save all packaging materials and damaged goods before filing a claim. International Shipping Policy.

We currently do not ship countries/destinations outside the U.S.

We are working hard to soon start the worldwide Shipping.


All returns are subject to a 15% restocking fee. Our policy lasts up to 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused, unopened and in the same condition that you received it. It must also be in the original packaging.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

Additional non-returnable items:

Gift cards Downloadable software products Some health and personal care items To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted (if applicable) Book with obvious signs of use CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened. Any item not in its original condition, is damaged or missing parts for reasons not due to our error Any item that is returned more than 30 days after delivery

Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed and a credit will automatically be applied to your credit card or original method of payment within a certain amount of days.

Late or missing refunds (if applicable) If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time between 30-90 days before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at

Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Exchanges (if applicable) We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at

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